Portable elevator for concrete mixers



Jan. 6, 1953 E. BARTLING 2,624,480

PORTABLE EEEvAToE EOE CONCRETE MIXERS Filed Dec. 23, 1950 2 SHEETS-SHEET l Gttorueg Jan. 6, 1953 E. BARTLING 2,624,480

PORTABLE ELEVATOR FOR CONCRETE MIXERS Filed Dec. 2s. 195o 2 SHEETS-SHEET 2 nventor ELA/1ER BARTH/v1;

(Ittorneg Patented Jan. 6, 1953 UNITED STATES TENT OFFICE PORTABLE ELEVATOR. FOR CONCRETE MIXERS 3 Claims. 1

This invention relates to concrete mixing apparatus where concrete is mixed on the job, and particularly where the ingredients, such as cement, sand, and stone or gravel, are deposited into a mixing truck or the like, and in particular this invention includes an inclined portable elevator having a traveling bucket actuated by a cable from a loading position on the lower end of a track on the elevator to a dumping position at the opposite or high end of the track where the contents thereof are dumped into a truck or the like.

The purpose of this invention is to provide portable means for elevating the ingredients of concrete from a low receiving position to a high dumping position from which the ingredients may be deposited into a truck.

Various types of scoops have been used for dumping the ingredients of concrete into concrete mixers where it is convenient to run the mixed concrete into forms or on a highway, but where it is necessary to carry the concrete to points remotely situated from the source of supply of the ingredients, much time is lost in shoveling the sand and gravel, or in otherwise elevating the ingredients into the mixing and conveying trucks.

With this thought in mind this invention contemplates a portable framework or structure having a bucket mounted by wheels on an inclined track with the bucket actuated by a cable from a winch and with the bucket provided with a gate and means for opening and closing the gate.

The object of this invention is, therefore, to provide a portable elevating structure with which a bucket is elevated from a loading position to a dumping position whereby unmixed ingredients of concrete may readily be elevated and dumped into trucks and the like.

Another object oi the invention is to provide elevating means for ingredients of concrete that may readily be towed from job to job.

Another object of the invention is to provide means in a portable elevating structure whereby tlvstructure is rigidly supported in the operative position.

A further object of the invention is to provide a portable elevator structure for elevating ingredients of concrete in which the structure is formed with conventional structural and other parts.

A still further object of the invention is to provide a portable structure for elevating ingredients of concrete to a dumping position above trucks and the like which is of a simple and economical construction.

With these and other objects and advantages in view the invention embodies a structural frame mounted on wheels and having an inclined track on the upper surface with a bucket mounted by wheels on the track and having a manually actuated dumping gate, and a winch with a cable for elevating and lowering the bucket.

Other features and advantages of the invention will appear from the following description taken in connection with the drawings, wherein:

Figure 1 is a view showing a side elevation of the elevator with the bucket shown in full lines in the upper or dumping position and in dotted lines in the lower or loading position, and with lower supporting sections of end legs of the structure shown in full lines in the operative position and in the folded or traveling position in dotted lines.

Figure 2 is a plan view of the elevator with the bucket shown in the upper position.

Figure 3 is an end elevational view of the ele- Vator looking toward the high or dumping end thereof.

Figure 4 is a detail showing a section taken on line 4-4 of Figure 2, with the parts shown on an enlarged scale.

Figure 5 is a similar section, also with the parts shown on an enlarged scale, and taken on line 5-5 of Figure 2.

Referring now to the drawings wherein like reference characters denote corresponding parts the improved concrete ingredient elevator of this invention includes a bucket I0 mounted to travel on rails l2 and I4 positioned on inclined beams I6 and I 8 of a portable structure having horizontally disposed lower beams 20 and 22 from which the inclined beams are supported, and the bucket, which is provided with a gate 24 is actuated by a cable 26 from a winch 28, that is mounted on the lower beam 22.

As illustrated in Figure 4, the bucket l0 includes a cylindrical upper section and a lower conical-shape section or hopper 30, and the gate 24 which is positioned against the lower end of the hopper, is hinged between lugs 32 with a pin 34. The opposite end of the gate is provided with an eye 3B to which a cable 38 is attached and the cable extends from a drum 40 of a winch 42, which is journaled by a shaft 44 in arms 46 that extend from the hopper. The drum of the winch is provided with a star wheel 48 that is engaged by a pawl 50, which is pivotally mounted on a lug 52 by a pin 54. The pawl is positioned to hold the winch with the gate closed, and the winch is actuated by a hand lever 56, whereby after being released by the pawl for dumping, the gate is drawn upwardly to the closed position.

The bucket is provided with wheels 58 and 50 on the upper end and similar wheels E2 and 84 on the lower end, the wheels on the upper end being journaled on studs GS and S8, and the lower wheels B2 and 64 being journaled on a shaft T0 which is mounted in bearings 12.

The cable 26,Y by which the bucket is drawn upwardly on the rails, is attached to an eye 14 on the forward side of the hopper of the bucket, and from the eye the cable extends over pulleys 16 and 18 to the winch 28, which is mounted on theY I lower beam 22. The winch is journaled in bearings 80 and 82 through a shaft 84 and the shaft is provided with a sheave 8S, and also a universal Joint 88, through which 'the shaft (may -be connected to the power take off of a tractor with a flexible shaft, as indicated by the numeral 90. For some uses the shaft may be driven by a belt L Aor the like through the sheave 85.

The pulley 16 in the center of the upper end I ofthe structure is journaled on a pin 102, the

upper end of which is held in a bracket94, and the lower end in the lower flange of an upper cross beam 06 connecting the upper ends of the inclined beams I 6 and I8.

y The elevator structure is supported by trucks pivotally mounted on an axle 88 extended beltween the lower beams 20 and 22 of the structure Vand wheels |00 and 02, on one side are journaled on shafts |04 andf'lUB, respectively, in the ends of a bolster |08 whichis pivotally mounted on the `axle 98. Similar wheels and ||2 on the opposite side are journaled on shafts I I4 and IIB inlthe ends of a bolster v| |8 which is also pivot- -ally mounted'on the 'axle 98. The trucks are provided with shock absorbers or springs |20 and |22, the lower ends of which are held in cups |24 and |26, respectively, on the holsters,` and the vupper ends are positioned on pins |28 and |30 of 24 is opened and closed by the hand lever 58.

The structure' is provided with diagonal bracing |48 that is positioned between the cross members of the lower beams 20 and 22, and similar bracing |50 is provided between vertical struts |52 positioned between the lower beams and the inclined beams I6 and |8. The upper ends of the beams I6 and |8 and the cross beam 96 are supported by an end frame formed with vertical struts |54 and |55 connected by a lower cross beam |58 and supported by diagonal bracing |80. Horizontal beams |62 connect the lower ends of the struts |54 and |56 to the vertical struts |52 at the end of the structure.

The end frame including the struts |54 and |56 is supported by legs |64 and |06 which are pivotally connected to the lower end of the end frame by bolts |68 and |10, so that the legs swing up- `wardly` to the positions shown in dotted lines in Figure 1 when the structure is towed from one position to another. Each of the legs |84 and |56 is provided with a base, as indicated by the numerals |12 and |14, and the bases are connected by threaded studs |16 and |18, vrespecjusted to rigidly hold thestructure on smooth or to the Vposition shown in full lines.

uneven surfaces.

With the parts arranged in this manner cement, sand, and gravel, or other ingredients of concrete, or other' products, may be placed in the bucket or hopper, with the bucket in the position shown in dotted lines in Figure 1, and by operating the winch 28, the bucket is drawn upwardly A truck or other carrier is backed into the high end of the structure and, with the bucket in the upper position, the gate 24 is opened, so that the contents of thebucket are deposited into the truck.

From the foregoing description it is'thought to be obvious that a portable elevator constructed linac'cordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be transported, set up for use and operated, and it will also be obvious that my invention is susceptible of some change and modication without departing from the principles and spirit thereof, and for this reason I do riot wish 'to be understood as 'limiting myself to the precise arrangement and formation ofvthe several parts herein shown in carrying out my'in'vention in practice, except as claimed.

Having thus fully described the invention what I claim asnew vand'desire to secure by Letters Patent, is:

1. In a portable elevator for aggregate for concrete'mixers, the combination which comprises -an'elongated horizontally disposed inclined elevatorY structure including spaced horizontally positioned parallel lower beams, upwardly inclined Iparallel upper beams positioned above the lower beams and extended upwardly from the ends of the lower beamsat the-lowy end of the structure,

sa-id upwardly inclined beams extended beyond the ends of the lower beams at the high end of the structure, spaced vertically disposed struts supporting the upwardly inclined beams from :he lower-beams, vertically disposed end struts extended downwardly from the upper ends of said upwardly inclined beams, lower sections pivotally mounted .on the lower ends of said end struts for supporting the high 4end of the structure from a surface upon which the elevator -may be positioned, supporting means for retaining said pivotally mounted lower sections in upright positions, trucks having wheels thereon positioned substantially midway of the length of the structure and mounted on said lower beams, adjustable supporting means depending from the lower end of the structure, and a dumping bucket mounted to travel on said upwardly inclined beams.

2. In a portable elevator for aggregate for concrete mixers, the combination which comprises an elongated horizontally disposed inclined elevator structure including spaced horizontally positioned parallel lower means, upwardly inclined parallel upper beams positioned above -the lower beams and extended upwardly from the ends of said lower beams at the low end of the structure, said yupwardly inclined beams extended beyond the ends of the lower beams at the high end of the structure, spaced vertically disposed struts supporting'the upwardly inclined beams from the lower beams, verticallygdisposed end'struts extended downwardly from the upper ends of said upwardly inclined beams, lower sections pivotally mounted on the lower ends of said end struts for supporting the high end of the structure, temporarily, from a surface upon which the elevator may be positioned, supporting means for retaining ysaid pivotally mounted lower sections in upright positions, trucks having wheels thereon upon which said lower beams are mounted, adjustable supporting means depending from the low end of the structure, a dumping bucket having a conical-shaped bottom providing a hopper mounted to travel on said upwardly inclined beams, a gate providing a closure hinged on the lower end of the hopper, means holding the gate in the closed position, and means for releasing the holding means of the gate.

3. In a portable elevator for aggregate for concrete mixers, the combination which comprises an elongated horizontally disposed inclined elevator structure including spaced horizontally positoned parallel lower beams, upwardly inclined :parallel upper beams positioned above the lower beams and extended upwardly from the ends of said lower beams at the low end of the structure, said upwardly inclined beams extended beyond the ends of the lower beams at the high end of the structure, spaced vertically disposed struts supporting the upwardly inclined beams from the lower beams, vertically disposed end struts extended downwardly from the upper ends of said upwardly inclined beams, the lower ends of said vertically disposed end struts being spaced above a surface upon which the elevator is positioned a suiicient distance to clear the body of a truck, horizontally disposed beams connecting the lower ends of said vertically disposed end struts to said vertically disposed struts supporting the upwardly inclined beams from the lower beams, a dumping bucket having a conical-shaped hopper yforming the bottom thereof mounted to travel on said upwardly inclined beams, a gate at the lower end of the hopper, means for opening and closing said gate, wheels mounted on said lower beams for spacing said lower beams above a surface upon which the elevator is positioned, and adjustable supporting means depending from the low end of the structure.

ELMER BARTLING.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 885,448 Davis Apr. 21, 1908 985,398 Cook Feb. 28, 1911 1,064,126 Brower June 10, 1913 1,209,668 Capron Dec. 26, 1916 2,182,893 Garlinghouse Dec. 12, 1939 2,430,931l Lacivit'a Nov. 18, 1947 2,431,047 Jones Nov. 18, 1947 2,542,383 White Feb. 20, 1951 

